Water-supply system.



No. 669,719. Patented Mar. I2, |90|L J. F. BARKER.

WATER SUPPLY SYSTEM.

(Application led Nov. 19, 1900.]

(No M odei.) s

JOHN F. BARKER, OF SPRINGFIELD, MASSACHUSETTS.

WATER-SUPPLY SYSTEM.

SPECIFICATION forming part of Letters Patent No. 669,719, dated March12, 1901.

Application led November 19, 1900. Serial No. 36,938. (No model.)

description, reference being had to the accom- Figure l is a plan viewof a reservoir embodying said improvement. Fig. 2 is a side elevationview, cutting the dam in vertical cross-section, showing the forwardpart of the Waste outlet-pipe and a section of the outlet supply-pipe.Fig. 3 is a face View of that portion of the dam which comprehends theoutlet supply-pipe, the waste outlet-pipe,and the additionalwaste-outlet.

The object of the improvement is the production of a reservoir for amunicipal Watersupply or the like in which the Waste or surplus Water istaken from near the bottom of the reservoir, with certain advantageousresults.

In the ordinary construction of ponds or reservoirs forming part of amunicipal Watersupply the waste water iiows away from the surface over adam provided for that purpose. Water at a temperature of 39 Fahrenheitis at its maximum density, and as its temperature falls below thatpointits density increases until it congeals, and the ice which isformed in the congealing Hoats on the surface of the water. Such pondsor reservoirs as those referred to are largely replenished during themonths of late fall, winter, and early spring with water that is coldand pure and which on account of its less specific gravity forms theupper part of the body of water in the reservoir, and from that portionof the Water all surplus runs to Waste over the top of a dam, leavingthe Warmer and heavier Water undisturbed and stagnant below it, thepractical result being that it is pure fresh Water that is wasted andstagnant Water, ofttimes foul, that is kept in store. This constructionof ponds and reservoirs, so common in the past, is one that practicallyleaves a body of Water at the bottom of the pond undisturbed forconsiderable periods of time, giving an opportunity meanwhile for thegeneration and growth therein of organisms which are detrimental to itspurity and also giving opportunity for the collection at the bottom ofthe pond of substances which are also detrimental to the purity of thewater, substances likely to come into the water either by the act of manor of the lower animals or of nature.

It is a prime object of the present improvement to remove as waste somuch of the water from the pond as equals the surplus which flows in,thus preserving and storing fresh Water by getting rid of the stagnantwater at the bottom of the pond, the effect being the same as though thereservoir were at stated intervals emptied and refilled with freshwater.

In the accompanying drawings the lettera denotes a pond or reservoir, bdenotes an inlet through which Water iiows into this reservoir, and cdenotes an outlet supply-pipe for taking water for drinking or otherpurposes to the consumers. The water tlows into and through the outletsupply-pipe c through gravity.

The letter d denotes a Waste outlet-pipe Which has lateral branches d',the pipe and its branches being perforated to permit the inflow ofwater. The intake pa rt of this waste outlet-pipe is situated below theoutlet supply-pipe and near the bottom of the reservoir. Near its frontor delivery end it rises to a higher point, so that it finally deliversthe waste water at a higher point than its intake and also at a higherpoint than the intake of the outlet supply-pipe.

The letter e denotes an additional outlet of the reservoir.

In practical operation and in ordinary times the waste outlet-pipe CZ isdesigned to be ample in size for the discharge of all surplus as waste.The additional waste-outlet e is provided as a safeguard for use intimes of flooding by rains or melting snow or the like. The

Waste outlet-pipe d is provided with a drawoff pipe for Fuse when it isdesired to draw Off substantially the entire contents of the reservoir.Y

I claim as my improvement- In combination, the reservoir, the inletadapted for the flow of water into the reservoir, the outlet supply-pipeand the Waste outlet-pipe adapted to take Water from below the Outletsupply-pipe, and through gravity, deliver it: from the reservoir at ahigher point, [o all substantially as described and. for the purposesset forth.

JOHN F. BARKER. Witnesses:

JONATHAN BARNES, LOUIS E. MALLORY.

